Contingent workers such as staffing agency temps and independent contractors have become a large and permanent part of the workforce. As a result, companies need to think carefully about the tools they use to manage these workers so they can maximize productivity while minimizing compliance issues.

Companies are implementing biometric time clocks using facial recognition, fingerprint tracking or vein-pattern scanning to make it harder for hourly workers to steal company time. Still, some question whether Big Brother might be watching a little too closely.